FasterPreinstallFilesystem
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| You can have subsections that better describe specific parts of the issue. | The first part is to back up the rootfs onto a different system, then reformat the root partition & restore. Benchmarks can be made at this time. |
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| This section should describe a plan of action (the "how") to implement the changes discussed. Could include subsections like: === UI Changes === Should cover changes required to the UI, or specific UI that is required to implement this |
Once benchmarking has helped establish a better choice in filesystem, the image builder scripts will be modified to enable that filesystem during build. Also, netinstall environment could be modified to mark that filesystem as default (but still user selectable). |
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| Code changes should include an overview of what needs to change, and in some cases even the specific details. === Migration === Include: * data migration, if any * redirects from old URLs to new ones, if any * how users will be pointed to the new way of doing things, if necessary. |
Changes to livecd and debian installer. |
Launchpad Entry: other-o-arm-faster-preinstall-filesystem
Created: 2011-04-22
Contributors: Tobin Davis
Packages affected:
Summary
Investigate the performance of various filesystems on SD for use in preinstalled images. Select one that provides the fastest performance on first run for end-users. Use this filesystem for preinstall image builds.
Release Note
Ubuntu 11.10 now uses ${FILESYSTEM} for preinstalled images, providing a significant increase performance from the first use.
Rationale
ext3 is a perfectly fine filesystem, but it isn't especially well suited to flash media. Filesystem limitations create a perception that Ubuntu is slower than it need be on some hardware, leading some users to select alternate software solutions.
User stories
Assumptions
Design
The first part is to back up the rootfs onto a different system, then reformat the root partition & restore. Benchmarks can be made at this time.
Implementation
Once benchmarking has helped establish a better choice in filesystem, the image builder scripts will be modified to enable that filesystem during build. Also, netinstall environment could be modified to mark that filesystem as default (but still user selectable).
Code Changes
Changes to livecd and debian installer.
Test/Demo Plan
It's important that we are able to test new features, and demonstrate them to users. Use this section to describe a short plan that anybody can follow that demonstrates the feature is working. This can then be used during testing, and to show off after release. Please add an entry to http://testcases.qa.ubuntu.com/Coverage/NewFeatures for tracking test coverage.
This need not be added or completed until the specification is nearing beta.
Unresolved issues
This should highlight any issues that should be addressed in further specifications, and not problems with the specification itself; since any specification with problems cannot be approved.
BoF agenda and discussion
Use this section to take notes during the BoF; if you keep it in the approved spec, use it for summarising what was discussed and note any options that were rejected.
ARM/Specs/FasterPreinstallFilesystem (last edited 2011-07-12 21:14:00 by gruemaster)